Compact Multi-Voltage Sequencer and Supervisor

The ADM1068 Super Sequencer® is a configurable supervisory/ sequencing device that offers a single-chip solution for supply monitoring and sequencing in multiple supply systems.

The device also provides up to eight programmable inputs for monitoring undervoltage faults, overvoltage faults, or out-of-window faults on up to eight supplies. In addition, eight programmable outputs can be used as logic enables. Six of these programmable outputs can also provide up to a 12 V output for driving the gate of an N-FET that can be placed in the path of a supply.

The logical core of the device is a sequencing engine. This state-machine-based construction provides up to 63 different states. This design enables very flexible sequencing of the outputs, based on the condition of the inputs.

The ADM1068 is controlled via configuration data that can be programmed into an EEPROM. The whole configuration can be programmed using an intuitive GUI-based software package provided by Analog Devices, Inc.

Applications

* Central office systems

* Servers/routers

* Multivoltage system line cards

* DSP/FPGA supply sequencing

* In-circuit testing of margined supplies

* Complete Supervisory and Sequencing Solution for up to 8 Supplies * 8 Supply Fault Detectors Enable Supervision of Supplies to Better than 1% Accuracy * 4 Selectable Input Attenuators Allow Supervision: Supplies up to 14.4 V on VH Supplies up to 6 V on VP1–3